GROHE, renowned for engineering excellence and the choice of discerning homeowners, applies the same superior craftsmanship to every GROHE product and spare part. Choosing genuine GROHE parts is your assurance that your GROHE product will continue to function as originally designed.
These obscure parts are backflow preventers in the rough-in housing. One of mine failed after over 20 years by an o-ring failure which partially blocked the hot water flow. Took several attempts at troubleshooting but finally solved the problem with these new backflow valves.. RogerL. San Jose, CA. 2021-07-08 05:06:28